Seat arm



FIG. 1 is a perspective view of a seat arm showing my new design;

FIG. 2 is a perspective view of a second embodiment of a seat arm;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a side view of FIG. 1;

FIG. 5 is a front view of FIG. 2;

FIG. 6 is a front view of FIG. 1;

FIG. 7 is a rear view of FIG. 2; and,

FIG. 8 is a rear view of FIG. 1.

The broken lines shown in all views are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a seat arm, substantially as shown and described. 